CA2476153C - Grinding roll - Google Patents
Grinding roll Download PDFInfo
- Publication number
- CA2476153C CA2476153C CA2476153A CA2476153A CA2476153C CA 2476153 C CA2476153 C CA 2476153C CA 2476153 A CA2476153 A CA 2476153A CA 2476153 A CA2476153 A CA 2476153A CA 2476153 C CA2476153 C CA 2476153C
- Authority
- CA
- Canada
- Prior art keywords
- roll
- wear protection
- grinding
- grinding roll
- basic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/30—Shape or construction of rollers
- B02C4/305—Wear resistant rollers
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention relates to a grinding roll with a basic roll body as well as a plurality of wear protection elements made from hard metal which form at least a part of the roll surface. The basic roll body has recesses extending in the circumferential direction, a plurality of wear protection elements being disposed one behind the other in the circumferential direction in each recess.
Description
Grinding roll The invention relates to a grinding roll with a basic roll body as well as a plurality of wear protection elements made from hard metal which form at least a part of the roll surface.
In the case of grinding rolls which are used in particular for so-called material bed comminution the problem of high wear on the roll surface arises. It is therefore known to counteract this wear by different shaping and coating of the roll surfaces exposed to the wear. A grinding roll is known from EP-A-0 516 957 in which pin-shaped profiled bodies are disposed on the roll surface, wherein only part of each profiled body is embedded in the basic roll body whilst the remaining part projects like a spine out of the basic roll body. The individual profiled bodies are spaced so that during operation some of the material to be comminuted becomes embedded in the interstices and thereby forms an autogenous wear protection.
In EP-B-0 659 108 a roller press is disclosed in which the roll surface is formed by flat zones which are made from highly wear-resistant material, the interstices between the highly wear-resistant zones being filled with a material having a different wear resistance. The interstitial material is a composite material which can be sintered and the highly wear-resistant zones are formed by hard bodies produced by hot-isostatic pressing, wherein the interstitial material and the material of the wear-resistant zones are fixed on the basic body by a hot-isostatic pressing operation and wherein the wear resistance of the interstitial material is basically slightly higher or lower than the wear resistance of the hard bodies in accordance with a desired profiling which is established due to wear.
Due to the measures described above, the wear on the roll surface could be reduced to an acceptable amount. However, the previously known measures do not constitute sufficient protection for the edges of the rolls or in the case of large rolls cannot be effected or cannot be effected economically, so that it is extremely difficult to F
In the case of grinding rolls which are used in particular for so-called material bed comminution the problem of high wear on the roll surface arises. It is therefore known to counteract this wear by different shaping and coating of the roll surfaces exposed to the wear. A grinding roll is known from EP-A-0 516 957 in which pin-shaped profiled bodies are disposed on the roll surface, wherein only part of each profiled body is embedded in the basic roll body whilst the remaining part projects like a spine out of the basic roll body. The individual profiled bodies are spaced so that during operation some of the material to be comminuted becomes embedded in the interstices and thereby forms an autogenous wear protection.
In EP-B-0 659 108 a roller press is disclosed in which the roll surface is formed by flat zones which are made from highly wear-resistant material, the interstices between the highly wear-resistant zones being filled with a material having a different wear resistance. The interstitial material is a composite material which can be sintered and the highly wear-resistant zones are formed by hard bodies produced by hot-isostatic pressing, wherein the interstitial material and the material of the wear-resistant zones are fixed on the basic body by a hot-isostatic pressing operation and wherein the wear resistance of the interstitial material is basically slightly higher or lower than the wear resistance of the hard bodies in accordance with a desired profiling which is established due to wear.
Due to the measures described above, the wear on the roll surface could be reduced to an acceptable amount. However, the previously known measures do not constitute sufficient protection for the edges of the rolls or in the case of large rolls cannot be effected or cannot be effected economically, so that it is extremely difficult to F
introduce the material bed roll mill into the copper/gold industry because of the high wear on the roll surface. In the past the regions of the roll edges were protected by a hard-facing. However, the wear resistance was not sufficient and necessitated frequent re-welding of the rolls in this region. Depending upon the intensity, the service life of the rolls lasts for approximately 2 to 6 weeks, which drastically reduces the availability and involves high repair costs.
The object of the invention, therefore, is to provide a new concept of wear protection for the roll surface.
IO
This object is achieved according to the invention by the features of Claim I.
Further embodiments of the invention are the subject matter of the subordinate claims.
The grinding roll according to the invention comprises a basic roll body as well as a plurality of wear protection elements made from hard metal which form at least a part of the roll surface. The basic roll body also has recesses extending in the circumferential direction, a plurality of wear protection elements being disposed one behind the other in the circumferential direction in each recess. In this way the wear protection elements form a virtually closed ring which offers a high degree of wear protection.
In a preferred embodiment a circumferential recess in which the wear protection elements are disposed immediately one behind the other is provided at least in the region of each of the edges of the roll.
The wear protection elements can be fixed directly on the basic roll body for example by bonding, clamping or soldering. In a preferred embodiment, however, the wear protection elements are mounted on a retaining body which is made from a material with a low hardness, in particular steel. The retaining body can be machined substantially better than the wear protection element and can therefore be adapted in a simple manner to the basic roll body.
As the wear protection elements project beyond the basic roll body in the region of the roll edges, they take on the function of a bulkhead in this region in order to prevent the material being comminuted from flowing in the axial direction. Tn this case the surface of the wear protection elements may be smooth or profiled.
Further advantages and embodiments of the invention are explained in greater detail with reference to the following description and the drawings, in which:
Figure 1 shows a schematic representation of a roll mill, Figure 2 shows a schematic cross-sectional representation of a grinding roll, Figure 3 shows a plan view of the grinding roll in the region of one end of the roll, and Figure 4 shows a schematic cross-sectional representation in the region of the edge of a roll.
For compacting, briquetting and comminution, it is usual for two rolls l, 2 running in opposite directions to be pressed against one another at high pressure. In so-called material bed comminution pressures of 50 MPa and above are used.
The grinding roll substantially comprises a basic roll body 10 and a plurality of wear protection elements 1 I, 12, 13, 14, ... The wear protection elements are made from hard metal and form at least a part of the roll surface. For fixing of the wear protection elements the basic roll body 10 has recesses 10.1, 10.2, 10.3 extending in the circumferential direction, a plurality of wear protection elements being disposed one behind the other in the circumferential direction in each recess.
The recesses preferably extend over the entire circumference and are provided at least in the region of the two roll ends 10a, 10b.
The object of the invention, therefore, is to provide a new concept of wear protection for the roll surface.
IO
This object is achieved according to the invention by the features of Claim I.
Further embodiments of the invention are the subject matter of the subordinate claims.
The grinding roll according to the invention comprises a basic roll body as well as a plurality of wear protection elements made from hard metal which form at least a part of the roll surface. The basic roll body also has recesses extending in the circumferential direction, a plurality of wear protection elements being disposed one behind the other in the circumferential direction in each recess. In this way the wear protection elements form a virtually closed ring which offers a high degree of wear protection.
In a preferred embodiment a circumferential recess in which the wear protection elements are disposed immediately one behind the other is provided at least in the region of each of the edges of the roll.
The wear protection elements can be fixed directly on the basic roll body for example by bonding, clamping or soldering. In a preferred embodiment, however, the wear protection elements are mounted on a retaining body which is made from a material with a low hardness, in particular steel. The retaining body can be machined substantially better than the wear protection element and can therefore be adapted in a simple manner to the basic roll body.
As the wear protection elements project beyond the basic roll body in the region of the roll edges, they take on the function of a bulkhead in this region in order to prevent the material being comminuted from flowing in the axial direction. Tn this case the surface of the wear protection elements may be smooth or profiled.
Further advantages and embodiments of the invention are explained in greater detail with reference to the following description and the drawings, in which:
Figure 1 shows a schematic representation of a roll mill, Figure 2 shows a schematic cross-sectional representation of a grinding roll, Figure 3 shows a plan view of the grinding roll in the region of one end of the roll, and Figure 4 shows a schematic cross-sectional representation in the region of the edge of a roll.
For compacting, briquetting and comminution, it is usual for two rolls l, 2 running in opposite directions to be pressed against one another at high pressure. In so-called material bed comminution pressures of 50 MPa and above are used.
The grinding roll substantially comprises a basic roll body 10 and a plurality of wear protection elements 1 I, 12, 13, 14, ... The wear protection elements are made from hard metal and form at least a part of the roll surface. For fixing of the wear protection elements the basic roll body 10 has recesses 10.1, 10.2, 10.3 extending in the circumferential direction, a plurality of wear protection elements being disposed one behind the other in the circumferential direction in each recess.
The recesses preferably extend over the entire circumference and are provided at least in the region of the two roll ends 10a, 10b.
The wear protection elements are fixed in the circumferential recesses in such a way that there is no material of the basic roll body between two wear protection elements which are disposed one behind the other in the circumferential direction.
Advantageously the distance between the wear protection elements in the circumferential direction on the roll surface is less than 5 mm. The length of the wear protection elements in the circumferential direction is preferably 20 to 100 mm.
The recesses 10.1, 10.3 are dimensioned so that only one wear protection element 11, 13 is disposed in each recess in the axial direction. Figure 2 shows on the roll end lOb a recess 10.2 in which a plurality of wear protection elements 12, 14 can be disposed in the axial direction. However, it is also possible to achieve an effective edge protection if on the roll ends only one circumferential recess is provided in which only one wear protection element is disposed in the axial direction.
The wear protection elements are of angular, preferably rectangular construction in plan view.
In principle the possibility exists of fixing the wear protection elements directly on the basic roll body; this could take place for example by bonding, clamping or hard-soldering.
Another fixing option consists of fixing each wear protection element on a retaining body 15, the retaining body preferably being made from a material with a Lower hardness, particularly steel. The fixing of the wear protection element on the retaining body can be effected for example by bonding, but in particular by hard-soldering The retaining body 15 has on its face opposite the wear protection element 11 a lug 16 which co-operates with a carresponding bore lOc of complementary shape in the basic roll body 10. In this case fixing can be achieved in particular by glueing the S
lug in the bore. Therefore the circumferential recesses are provided with a number of bores corresponding to the number of lugs.
The wear protection elements 11, 12 disposed on the edge of the roll are oriented so that with one face 21 a they form a wear protection for the roll surface and with a face l lb disposed perpendicular thereto they form a wear protection for the radially outer edge of a lateral face of the grinding roll. Tn the illustrated embodiment the retaining element 15 also has a second wear protection element 17 on the face of the retaining element aligned with the lateral face of the grinding roll in order to protect the unprotected face of the retaining element from wear.
Adjacent wear protection elements are preferably disposed at such a small distance from one another that no autogenous wear protection is formed between them.
The wear protection elements can also be disposed over the entire width of the grinding roll. In the illustrated embodiment profiled bodies 18 are provided (see Figure 4) for the central region. These profiled bodies 18 may be constructed in the same way as the wear protection elements 11 or in another way. They proj ect upwards and are preferably spaced from one another in such a way that during the grinding process the material to be comminuted becomes embedded in the interstices formed in the circumferential direction and forms an autogenous wear protection layer there.
The wear protection elements can be disposed on the edge of the roll or also in the centre of the roll, flush with the base material, so that no profiling is produced in the axial direction. Optionally, the wear protection elements 11 disposed on the roll ends can also project beyond the surface of the basic roll body 10, as shown in Figure 4.
Thus the wear protection elements 11 form a bulkhead over the entire circumference of the roll and thereby prevent the material being comminuted from flowing in the axial direction {arrow 19).
Although the surface of the wear protection elements in the illustrated embodiment is of smooth construction, profiled surfaces could also be provided depending upon the application.
Advantageously the distance between the wear protection elements in the circumferential direction on the roll surface is less than 5 mm. The length of the wear protection elements in the circumferential direction is preferably 20 to 100 mm.
The recesses 10.1, 10.3 are dimensioned so that only one wear protection element 11, 13 is disposed in each recess in the axial direction. Figure 2 shows on the roll end lOb a recess 10.2 in which a plurality of wear protection elements 12, 14 can be disposed in the axial direction. However, it is also possible to achieve an effective edge protection if on the roll ends only one circumferential recess is provided in which only one wear protection element is disposed in the axial direction.
The wear protection elements are of angular, preferably rectangular construction in plan view.
In principle the possibility exists of fixing the wear protection elements directly on the basic roll body; this could take place for example by bonding, clamping or hard-soldering.
Another fixing option consists of fixing each wear protection element on a retaining body 15, the retaining body preferably being made from a material with a Lower hardness, particularly steel. The fixing of the wear protection element on the retaining body can be effected for example by bonding, but in particular by hard-soldering The retaining body 15 has on its face opposite the wear protection element 11 a lug 16 which co-operates with a carresponding bore lOc of complementary shape in the basic roll body 10. In this case fixing can be achieved in particular by glueing the S
lug in the bore. Therefore the circumferential recesses are provided with a number of bores corresponding to the number of lugs.
The wear protection elements 11, 12 disposed on the edge of the roll are oriented so that with one face 21 a they form a wear protection for the roll surface and with a face l lb disposed perpendicular thereto they form a wear protection for the radially outer edge of a lateral face of the grinding roll. Tn the illustrated embodiment the retaining element 15 also has a second wear protection element 17 on the face of the retaining element aligned with the lateral face of the grinding roll in order to protect the unprotected face of the retaining element from wear.
Adjacent wear protection elements are preferably disposed at such a small distance from one another that no autogenous wear protection is formed between them.
The wear protection elements can also be disposed over the entire width of the grinding roll. In the illustrated embodiment profiled bodies 18 are provided (see Figure 4) for the central region. These profiled bodies 18 may be constructed in the same way as the wear protection elements 11 or in another way. They proj ect upwards and are preferably spaced from one another in such a way that during the grinding process the material to be comminuted becomes embedded in the interstices formed in the circumferential direction and forms an autogenous wear protection layer there.
The wear protection elements can be disposed on the edge of the roll or also in the centre of the roll, flush with the base material, so that no profiling is produced in the axial direction. Optionally, the wear protection elements 11 disposed on the roll ends can also project beyond the surface of the basic roll body 10, as shown in Figure 4.
Thus the wear protection elements 11 form a bulkhead over the entire circumference of the roll and thereby prevent the material being comminuted from flowing in the axial direction {arrow 19).
Although the surface of the wear protection elements in the illustrated embodiment is of smooth construction, profiled surfaces could also be provided depending upon the application.
Claims (19)
1. Grinding roll (1) with a basic roll body (10) as well as a plurality of wear protection elements (11-14) made from hard metal which form at least a part of the roll surface, characterised in that the basic rail body has recesses (10.1, 10.2, 10.3) extending in the circumferential direction, a plurality of wear protection elements being disposed one behind the other in the circumferential direction in each recess.
2. Grinding roll as claimed in Claim 1, characterised in that the basic roll body has, at least in the region of each of the roll ends (10a, 10b), a circumferential recess (10.1, 10.2) in which the wear protection elements (11, 12) are disposed in the circumferential direction.
3. Grinding roll as claimed in Claim 1, characterised in that the basic roll body has, at least in the region of each of the roll ends (10a, 10b), a circumferential recess (10.1, 10.2) which is constructed so as to be open at the top and towards the lateral face of the grinding roll and in which the wear protection elements (11, 12) are disposed in the circumferential direction.
4. Grinding roll as claimed in Claim 1, characterised in that the recesses (11-14) each extend over the entire circumference.
5. Grinding roll as claimed in Claim 1, characterised in that the wear protection elements (11) disposed in the recesses (10.1) are fixed directly on the basic roll body.
6. Grinding roll as claimed in Claim 1, characterised in that the wear protection elements (11) are fixed in the circumferential recesses (10.1) in such a way that there is no material of the basic roll body (10) between two wear protection elements which are disposed one behind the other in the circumferential direction.
7. Grinding roll as claimed in Claim 1, characterised in that the distance between the wear protection elements (11) is so small that no autogenous wear protection is formed between them.
8. Grinding roll as claimed in Claim 1, characterised in that each wear protection element (11) is fixed on a retaining body, the retaining body (15) being made from a material with a lower hardness, in particular steel.
9. Grinding roll as claimed in Claim 1, characterised in that each wear protection element (11) is fixed on a retaining body (15) by means of hard-soldering.
10. Grinding roll as claimed in Claim 1, characterised in that each wear protection element (11) is fixed on a retaining body (15) and the retaining body has the wear protection element on one face and has a lug (16) on its opposing face, the lug co-operating with a corresponding bore (10c) of complementary construction in the basic roll body.
11. Grinding roll as claimed in Claim 1, characterised in that each wear protection element (11) is fixed on a retaining body (15) and the retaining body has the wear protection element on one face and has a lug (15) on its opposing face, the lug of the retaining body being glued in a corresponding bore (10c) of complementary construction in the basic roll body.
12. Grinding roll as claimed in Claim 1, characterised in that for protection of the roll surface the basic roll body (10) is also provided with wear protection elements in a region between the two roll ends (10a, 10b).
13. Grinding roll as claimed in Claim 1, characterised in that the wear protection elements project beyond the basic roll body in the region of the roll ends.
14. Grinding roll as claimed in Claim 1, characterised in that the wear protection elements are of angular construction in plan view.
15. Grinding roll as claimed in Claim 1, characterised in that the distance between adjacent wear protection elements (11) in the circumferential direction on the roll surface is less than 5 mm.
16. Grinding roll as claimed in Claim 1, characterised in that the length of the wear protection elements (11) in the circumferential direction is between 20 and 100 mm.
17. Grinding roll as claimed in Claim 1, characterised in that each wear protection element is fixed on a retaining body (15), the retaining body being made from a material with a lower hardness, in particular steel, and the wear protection element is supported on the basic roll body by way of the retaining body.
18. Grinding roll as claimed in Claim 1, characterised in that the circumferential recess is provided in the region of the roll edges (10a, 10b) and the wear protection element (11) is disposed in such a way that with one face it forms a wear protection for the roll surface and with a face disposed perpendicular thereto it forms a wear protection for the radially outer edge of a lateral face of the grinding roll.
19. Grinding roll as claimed in Claim 1, characterised in that the wear protection element (11) is fixed on a retaining element (15) and retains a second wear protection element (17) on a face of the retaining element aligned with the lateral face of the grinding roll.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10335115A DE10335115A1 (en) | 2003-07-31 | 2003-07-31 | grinding roll |
| DE10335115.9 | 2003-07-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2476153A1 CA2476153A1 (en) | 2005-01-31 |
| CA2476153C true CA2476153C (en) | 2011-01-25 |
Family
ID=33521509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2476153A Active CA2476153C (en) | 2003-07-31 | 2004-07-30 | Grinding roll |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7510135B2 (en) |
| EP (1) | EP1502650B1 (en) |
| AU (1) | AU2004203273B2 (en) |
| BR (1) | BRPI0403023A (en) |
| CA (1) | CA2476153C (en) |
| CL (1) | CL2004001815A1 (en) |
| DE (2) | DE10335115A1 (en) |
| ES (1) | ES2333321T3 (en) |
| PE (1) | PE20050268A1 (en) |
| ZA (1) | ZA200405585B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SE525181C2 (en) * | 2002-05-23 | 2004-12-21 | Sandvik Ab | For a crusher intended wear part and way to make it |
| DE10354679A1 (en) * | 2003-11-22 | 2005-06-30 | Khd Humboldt Wedag Ag | Grinding roller for the crushing of granular material |
| US7641135B1 (en) * | 2006-02-28 | 2010-01-05 | Emily Lo | Combinative cutting wheel of a rotary cutter of paper shredder |
| DE102006010042A1 (en) * | 2006-03-04 | 2007-09-06 | Khd Humboldt Wedag Gmbh | Hard body for the autogenous wear protection of roll surfaces |
| DE102006028546A1 (en) * | 2006-06-21 | 2007-12-27 | Polysius Ag | Process for reprocessing a used grinding roller |
| DE102007004004B4 (en) * | 2007-01-26 | 2016-09-01 | Thyssenkrupp Industrial Solutions Ag | rolling mill |
| DE102007012102A1 (en) * | 2007-03-13 | 2008-09-18 | Polysius Ag | Process for reprocessing a used grinding roller |
| DE102007018090A1 (en) * | 2007-04-17 | 2008-10-23 | Polysius Ag | Grinding roller and process for reprocessing |
| BR112012015020B1 (en) * | 2009-12-18 | 2019-12-17 | Metso Minerais Wear Prot Ab | elongated insert member for a grinding cylinder |
| CN102844117A (en) * | 2010-04-16 | 2012-12-26 | Fl史密斯公司 | Wear-resistant roller |
| DE102010016498A1 (en) * | 2010-04-16 | 2011-10-20 | Betek Bergbau- Und Hartmetalltechnik Karl-Heinz Simon Gmbh & Co. Kg | Blowbar for an impact crusher, in particular a rotary impact crusher |
| DE102010060236A1 (en) | 2010-10-28 | 2012-05-03 | Thyssenkrupp Polysius Ag | Roller body for high pressure-roller mill, has profile bodies parts protruding from roller surface and including profile body heads, where length of each head amounts to specific percentage of entire length protruding from roller surface |
| DE102011102386C5 (en) | 2011-05-25 | 2015-03-19 | Thyssenkrupp Industrial Solutions Ag | Grinding roller and a high-pressure roller mill |
| CN104039454B (en) * | 2011-10-07 | 2015-10-14 | Fl史密斯公司 | The edge wear parts of roll squeezer |
| DE102012102192B4 (en) * | 2012-03-15 | 2020-01-23 | Maschinenfabrik Köppern Gmbh & Co. Kg | Press roller for a roller press |
| DE102012102199A1 (en) * | 2012-03-15 | 2013-09-19 | Maschinenfabrik Köppern GmbH & Co KG | press roll |
| US8833687B2 (en) * | 2012-04-20 | 2014-09-16 | Metso Minerals Industries, Inc. | Crushing roll with edge protection |
| AU2014259880B2 (en) * | 2013-05-01 | 2018-05-31 | Us Synthetic Corporation | Roll assemblies including superhard inserts, high pressure grinder roll apparatuses using same, and methods of use |
| DE102013107798A1 (en) * | 2013-07-22 | 2015-01-22 | Thyssenkrupp Industrial Solutions Ag | rolling mill |
| DE102013110893B4 (en) * | 2013-10-01 | 2017-04-06 | Thyssenkrupp Ag | Roller mill for crushing brittle material |
| DE102013114516B4 (en) * | 2013-12-19 | 2023-11-02 | Flsmidth A/S | Grinding roller and device for processing a grinding roller |
| DE102015207927A1 (en) * | 2015-04-29 | 2016-11-03 | Takraf Gmbh | Side wear protection for the role of a roller press |
| DE102016200912A1 (en) * | 2016-01-22 | 2017-07-27 | Thyssenkrupp Ag | Wear protection element for a shredding device |
| DE102016212239B4 (en) | 2016-07-05 | 2018-05-09 | Thyssenkrupp Ag | Grinding roller with an edge protection device |
| NL2020403B1 (en) | 2018-02-08 | 2019-08-19 | Weir Minerals Netherlands Bv | A roll for a roller press suitable for comminution of granular material by interparticle crushing, as well as a roller press provided with such a roll. |
| DE102018113440A1 (en) * | 2018-06-06 | 2019-12-12 | Maschinenfabrik Köppern Gmbh & Co. Kg | roll press |
| DE102019201097A1 (en) * | 2019-01-29 | 2020-07-30 | Thyssenkrupp Ag | Wear protection element for a shredding device |
| DE102019201098A1 (en) * | 2019-01-29 | 2020-07-30 | Thyssenkrupp Ag | Wear protection element for a shredding device |
| CN109876898A (en) * | 2019-03-05 | 2019-06-14 | 郑州机械研究所有限公司 | A kind of grinding roller of vertical mill with surface transverse gradients hardness |
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| US1947440A (en) * | 1932-02-16 | 1934-02-13 | Milne Samuel | Beater roll |
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| JPS63143949A (en) * | 1986-12-09 | 1988-06-16 | アイエヌジ商事株式会社 | Crushing surface member used for crusher |
| DE3807176A1 (en) * | 1987-03-06 | 1988-10-20 | Kobe Steel Ltd | IMPACT CRUSHERS |
| DE3921419A1 (en) * | 1989-06-29 | 1991-01-10 | Loesche Gmbh | GRINDING SURFACE OF GRIND MILLS |
| DE4132474A1 (en) * | 1991-05-28 | 1992-12-03 | Kloeckner Humboldt Deutz Ag | WEAR-RESISTANT GRINDING ROLLER FOR USE IN ROLLING MACHINES, ESPECIALLY IN HIGH PRESSURE ROLLING PRESSES |
| US5318231A (en) * | 1992-10-20 | 1994-06-07 | Norman J. Emanuel | Rotary shredding cutters |
| WO1995003126A1 (en) | 1993-07-20 | 1995-02-02 | Maschinenfabrik Köppern Gmbh & Co. Kg | Roller presses, in particular for crushing strongly abrasive substances |
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| US5421290A (en) | 1994-03-31 | 1995-06-06 | Welch; Wilmer M. | Animal feeder |
| DE4431563A1 (en) * | 1994-09-05 | 1996-03-07 | Kloeckner Humboldt Deutz Ag | Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods (documents for P 44 44 337.4 given) |
| DE19506600A1 (en) * | 1995-02-24 | 1996-08-29 | Krupp Polysius Ag | Roll, process for producing a roll and material bed roll mill |
| US5794563A (en) | 1996-11-12 | 1998-08-18 | Klepac; Daniel T. | Stand-mounted game feeder apparatus |
| DE19707130A1 (en) * | 1997-02-22 | 1998-08-27 | Kloeckner Humboldt Wedag | Surface armouring for rollers used in rolling press for granular material |
| US6481373B2 (en) | 1999-12-29 | 2002-11-19 | Swetzig Deanna K. | Programmable hay-forage feeder |
| US6305320B1 (en) | 2000-05-09 | 2001-10-23 | John Fore | Game feeder support assembly |
| US6622653B1 (en) | 2002-10-08 | 2003-09-23 | Harlan Starnes, Jr. | Animal feed support stand |
| USD486946S1 (en) | 2003-02-11 | 2004-02-17 | Lawrence R. Castro | Live animal feeder |
-
2003
- 2003-07-31 DE DE10335115A patent/DE10335115A1/en not_active Withdrawn
-
2004
- 2004-07-13 EP EP04016484A patent/EP1502650B1/en active Active
- 2004-07-13 ES ES04016484T patent/ES2333321T3/en active Active
- 2004-07-13 DE DE502004010027T patent/DE502004010027D1/en active Active
- 2004-07-14 ZA ZA2004/05585A patent/ZA200405585B/en unknown
- 2004-07-20 CL CL200401815A patent/CL2004001815A1/en unknown
- 2004-07-20 AU AU2004203273A patent/AU2004203273B2/en active Active
- 2004-07-21 US US10/895,707 patent/US7510135B2/en active Active
- 2004-07-26 BR BR0403023-0A patent/BRPI0403023A/en active IP Right Grant
- 2004-07-27 PE PE2004000727A patent/PE20050268A1/en active IP Right Grant
- 2004-07-30 CA CA2476153A patent/CA2476153C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE10335115A1 (en) | 2005-02-24 |
| EP1502650B1 (en) | 2009-09-09 |
| PE20050268A1 (en) | 2005-04-15 |
| US20050061901A1 (en) | 2005-03-24 |
| DE502004010027D1 (en) | 2009-10-22 |
| BRPI0403023A (en) | 2005-05-31 |
| AU2004203273A1 (en) | 2005-02-17 |
| ZA200405585B (en) | 2005-03-30 |
| AU2004203273B2 (en) | 2008-12-11 |
| US7510135B2 (en) | 2009-03-31 |
| EP1502650A1 (en) | 2005-02-02 |
| ES2333321T3 (en) | 2010-02-19 |
| CA2476153A1 (en) | 2005-01-31 |
| CL2004001815A1 (en) | 2005-06-03 |
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| EEER | Examination request |